Table 2 Ratios between macronutrients in the solutions of Dendrobium Tubtim Siam and Phalaenopsis Taisuco Swan and the solution by Hoagland and Arnon
Ratios | Nutrient solution proposed by Hoagland & Aenon (1950) | Nutrient solutions proposed from the optimal concentrations of nutrients | |
|---|---|---|---|
Dendrobium Tubtim Siam | Phalaenopsis Taisuco Swan | ||
N:P | 15.00 | 18.26 | 24.74 |
N:K | 2.50 | 1.37 | 1.45 |
N:Ca | 3.00 | 4.33 | 5.92 |
N:Mg | 7.50 | 5.29 | 12.91 |
N:S | 7.50 | 56.70 | 28.31 |
P:K | 0.17 | 0.08 | 0.06 |
P:Ca | 0.20 | 0.24 | 0.24 |
P:Mg | 0.50 | 0.29 | 0.52 |
P:S | 0.50 | 3.11 | 1.14 |
K:Ca | 1.20 | 3.16 | 4.08 |
K:Mg | 3.00 | 3.86 | 8.90 |
K:S | 3.00 | 41.37 | 19.51 |
Ca:Mg | 2.50 | 1.22 | 2.18 |
Ca:S | 2.50 | 13.09 | 4.78 |
Mg:S | 1.00 | 10.72 | 2.19 |